/Engine/Source/Editor/AssetTagsEditor/Public/SAssetTagItem.h
Set the inner content of this row, preserving any extra UI (such as the expander arrows for tree views) that was added by ConstructChildren
virtual void SetContent ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWidget](API\Runtime\SlateCore\Widgets\SWidget) > InContent )